The new isotope, uranium-241, has 92 protons (as all uranium isotopes do) and 149 neutrons, making it the first new neutron-rich isotope of uranium discovered since 1979.

These different forms are called isotopes, meaning some oxygen atoms are lighter and some are heavier. At lower water temperatures, a higher abundance of the heavy oxygen isotope is incorporated ...

Using its electron linear accelerator, researchers have enabled two companies to demonstrate new methods for the production of molybdenum-99, the parent isotope of technetium-99m – a medical ...

These are used in diagnostics, meaning 10,000 people or more may miss out on vital diagnostic scans Australia is facing possibly its worst ever shortage of medical isotopes.

An international governing body has adopted a new definition of atomic mass (aka atomic weight) changing from specific values to intervals of masses to resolve 15 years of debate on one of the ...

Isotope signatures are extremely useful for researchers. For example, plants absorb stable carbon-12 and carbon-13 isotopes, which have a consistent ratio to one another in Earth’s atmosphere.